The paper analyzes the advantages of the CRM system when it is used in the activities of retail stores. Seven main advantages were identified through a systematic analysis. The analysis of the requirements for the CRM system implemented in the retail enterprise is performed. According to these requirements, it is possible to select the system that is most suitable for a particular store.
The article deals with the problems that arise when detecting network attacks using intrusion detection systems in the corporate network of an enterprise. The features of the formation of signatures of network attacks are considered. The problem of coincidence of parameters of network intrusions and parameters of damaged packets is investigated. To assess the suitability of the rules for detecting network attacks and their subsequent control, a method for upgrading the component composition of intrusion detection systems has been redesigned. A method of mathematical evaluation of the suitability of the rules for detecting network attacks is considered.
The article offers recommendations for conducting laboratory work in a remote format in technical disciplines, during the pandemic, through the development and use of automated information systems in the form of training programs and software simulators.
Parameterizations of some surfaces using functions of a complex variable are considered, while obtaining different coordinate grids. The possibility of modeling bodies by setting the General projection area is described.
The article considers the following points: consideration of the main existing dosing devices, and the choice of the dosing method; consideration of the main components for a liquid dosing complex; development of a schematic diagram of a control board, revision of components of a printed circuit board, as well as development of a software part of such a complex.
The paper considers the process of car body painting at a factory. The quality of the body coating directly affects the service life of the vehicle. Modern painting lines at facilities are equipped with robotic equipment. Using robots allows to do painting work with high precision and less wastes. The human-machine interface allows to control and manage complex production processes. The results of designing the operator's monitoring panel for tracking processes on the robotic line for car body painting are presented.
The results of generalized satellite channel model constructing in MathCAD, including the synthesis of a discrete information signal, the implementation of a convolutional encoder, a forming Nyquist filter and a BPSK modulator, the synthesis of a discrete additive narrow-band Gaussian noise, the implementation of a BPSK demodulator and a decoder based on the Witterby algorithm are presented in this article. As a result of verification of the model, it is shown that in the absence of additive noise, the Nyquist filter eliminates intersymbol interference. The gain in the signal-to-noise ratio (SNR), at which the set value of the bit error rate (BER) is achieved, can be up to 9 dB when the rounding factor of the Nyquist filter is reduced from 0.9 to 0.3.
The article is devoted to the development of small-sized antenna systems to ensure stable radio communication on ships in a complex electromagnetic environment, when a large number of radio-electronic devices must be located in a limited area of the deck space. The proposed antenna structures have positive weight and size properties, are characterized by a high constant gain, and are capable of operating in a wide frequency range, which suggests the possibility of their active use in shipboard VHF radio communication systems on marine vehicles for various purposes.
The paper considers ways to improve antenna-feeder devices in order to improve their weight and size characteristics, which is most important in order to ensure communication with remote mobile objects. Giving a certain configuration to the antenna vibrators while using several coplanar lines and ensuring the joint operation of several antenna emitters allows you to significantly reduce the overall size of the structure while ensuring high power output. The construction of a radio frequency module according to a multi-channel scheme makes it possible to increase the range of operating frequencies by the required width of the range used in communication systems.
To study resonance and near-resonance phenomena, a symbolic (complex) method was used, which makes it possible to significantly increase productivity, simplify and formalize mathematical transformations. Parallel and sequential connections of elements of a mechanical system with a source of force or a source of speed as a source of external mechanical harmonic action are considered. Four modes are described — resonances and antiresonances of forces and velocities. The use of the symbolic (complex) method has significantly simplified the study of resonance and near-resonance phenomena, in particular, it has made it possible to deeply unify and formalize the consideration of various mechanical systems. The cumbersome and time-consuming operations associated with the preparation and solution of differential equations have been replaced by simple algebraic transformations. The method is based on the mechanical analogue of Ohm's law in a complex representation and the concept of mechanical reactance, resistance, impedance, susceptance, conductance and admittance.
The article is devoted to the development of a methodology for studying the problems of quantum computing, mastered by students in the framework of higher education programs. On the example of a two-qubit quantum circuit performing a unitary transformation U of the form → , the problem of factorization of the superposition state at the output of the circuit is discussed. The presented approach will be useful in studying topics related to the use of quantum parallelism in the calculation procedure.
Changes in the SI-2019 system are proposed to be taken into account by correcting of the educational experiment in atomic physics. From the data on the emission spectrum of atomic hydrogen, it was proposed to calculate not only the Rydberg constant, but also the effective mass of the electron, the refractive index of air. It is shown that a digital spectrometer allows one to quantitatively study the isotope effect of a proton.
The analogy between solitons and black holes is considered for self-induced transparency. In nonlinear optics Hawking radiation can exist. This effect in particular leads to decreasing of soliton energy with time.